Filed under 'Katherine Schwarzenegger'

Looks like media-savvy runs in the family! Katherine Schwarzenegger, 20, the oldest child of California Gov. Arnold Schwarzenegger and journalist Maria Shriver, has written her first book. Titled Rock What You've Got: Secrets to Loving Your Inner and Outer Beauty, it's aimed at helping young girls deal with body image issues and to gain confidence in themselves.

Katherine tells USA Today that she had her first body image crisis when she was in the fourth grade, and wrote her book to let young girls know that they are not alone. "It was the first time I was aware of my body and compared what I looked like to what other girls looked like," she says. "It freaked me out...I want to let girls know they are not alone with the changes and doubts about their body."

Katherine credits her parents for helping her through her issues, and for making sure she and her siblings had a normal childhood. "They were very protective of having us in the public eye when we were younger," she emphasizes. "We didn't go to Hollywood premieres. We practiced community service. We went to school and camp like normal kids.

"My mom was always good with me. She always checked in with me. I had the best relationship with my mom. I still do. I talk to her four times a day...I also have an amazing relationship with my dad...I talk to him about boys, about going out, about what I'm interested in, about business."

First Lady of California, Maria Shriver and two of her children Patrick, 15, and Katherine, 19, were spotted over the weekend shopping at the Brentwood Market.

Dad is Governor Arnold Schwarzenegger. The couple have two other children, Christina,17, and Christopher, 11.

Photos: Flynet

Governor of California, Arnold Schwarzenegger, 60, took his two daughters Christina,16,(R) and Katherine, 18,(L) to Barneys New York today. I never realized how tall the girl were - I looked up Arnold's height and he's 6 ft 1.5 in(?) Katherine looks just like mom Maria Shriver.

Photo: ODuran/FamePictures